I remember a race at Nelson Ledges back in the 70s with a 240Z, XKE 6 and TR6 such glorious sounds.
I remember a race at Nelson Ledges back in the 70s with a 240Z, XKE 6 and TR6 such glorious sounds.
In reply to DrMikeCSI :
Thanks for the memory.
I hope to get there sometime to actually run the track instead of just spectate.
2/14/23:
My Camshafts Arrived Back From Oregon Cam Grinding as well as 24 Lifters.
I stamped the Cams so that they would be matched with the Core Engine's oil pumps that they were mated with, so that there is less of an oil pump gear compatibility issue in the future.
Now I have a new cam for this build as well as 2 more cams for future road going cars, as my '79 Volare Duster and the '62 Valiant Wagon will need some rebuilds sometime.
Cheers!
Cool, what grind are they?
Hi Matt,
OCG Lobe #'s
Intake Lobe = #1628 / Exhaust Lobe = #1920
LSA = 106° Intake Center line = 102°
Intake dur 276° Intake dur@0.050" 244° Intake lift 0.483"
Exhaust dur 273° Exhaust dur@0.050" 236° Exhaust lift 0.473"
Actually one of the Cams was the "damaged one" that you gave me a few years back - I took Pictures of it and sent it to Ken @ OCG and He said "yeah I think most of that damage will grind out"
So Thank you, I was going to make some artstuff out of that old cam, but it turned out to have a 2nd life in it :-)
Glad to hear it's found another use! Sounds like this grind is taking advantage of the larger Mopar lifters to get more lift than the Comp cam I have.
This is not even close to max lift I have seen with a Slant 6 Cams.
Lift numbers over 1/2" - closer to 5/8" have been advertised on slant 6 all out cams.
I think my Ruster Cam has something like 0.562" on a 1.6 roller rocker minus the ~0.028" Valve Lash.
The machine shop called yesterday asking about the Torque Specs for my honing plate - so that is promising - Progress should be happening there!
Those cam specs are interesting. Tight LSA, more lift and duration on the intake, seems like plenty of lift on both sides for a street car. Especially one with an engine so far short of five liters; that would be a decent amount of lift for a Ford 302... Probably says something about the /6 head.
Slant 6 Heads are awful, especially in stock form.
The Bore tends to limit things too.
I have a good one on there as far as slant 6 heads go, and not too many people are interested enough to make a an aftermarket head for one.
106!? Will it idle?
In reply to buzzboy :
This is a copy of the cam that I had in the car for 2 years.. I had no problems getting it to idle. Valve lash settings can affect Idle and the torque curve a bit in my findings.
3/2/23:
It was 70° in western Pennsylvania on March 1st yesterday.. yet an usually warm day again, the roads are also unusually dry and salt free from the rain. We have not really had any cold or snow this year at all.. I miss winter.
It was nice enough to take the '62 Wagon out to do some station wagon cruising and run some errands. My errands took me to the machine shop where the machined block and crank were waiting for me yesterday.
I also was able to get the block mounted on the stand to begin some cleaning and assembly.
I have some other surprise goodies arriving later this week too! :D
3/3/23:
I got the Rods / pins and pistons assembled.
Slowly but surely.
3/9/23:
Over the weekend I got some small things done.
Got the Cam Bearings installed and began to mock up a late model OE piston squirter for the Oil Pump / Cam gear helical interface. Not sure how all of that is going to work yet.
Also got the matched oil pump from this cam... (I stamped the cams and corresponding oil pumps before sending to the cam grinding shop) and did some modifications... removed the factory standpipe, did a bit of porting / blending inside the factory casting, as well as throughly cleaning and servicing the entire assembly.
I de-sludged and thoroughly polished / cleaned the oil pressure relief valve.
It was so sludged and stuck that I had to place a 1/2" tap up in the bore to get it to move and be pulled free.
That must have felt great to finally get out of there!
Nice. I can't wait to see what you come up with for the cam gear oiler.
3/12/23:
Got some things accomplished today.
Finally got the repurposed piston squirter mocked up and mounted.
It has to be drilled from the outside of the block / oil gallery for tapping, then the hole on the outside of the oil gallery plugged.
The piston oil squirter I used was listed for Audi A3,A4, A5, Passat, Golf/GTI and Jetta.. It's a VW Part, but I don't know the part #.
I like this one because the cam can be installed once it is in place.
I had to make a tool for it out of a 6mm hex wrench as the Torx T40 does not fit in the cam tunnel.
Good Use of some scrap metal and and old ratchet handle.
Tap the Block from the outside to the inside.
Mock up and reshape the squirter tube to the cam / oil pump gear interface.
Retap the Outside hole for 1/4" Pipe Plug:
Got some Painting done as well as installing the cam bearings.
Very nice work on the oiler.
MadScientistMatt said:Very nice work on the oiler.
Thanks, Cool thing is I think it would fit your passat.
Thats awesome. Ive never seen someone add oil squirters before! What does this due to oil pressure? And i never realized that the slant sixes had issues with the cam/dist gear wearing. You only ever hear about them going forever with no oil and coolant.....
I am pretty sure with proper clearances elsewhere in the engine I can get the Oil pressure where I need it by shimming the oil pressure spring in the pressure regulator spring of the oil pump.
On a stock slant 6 no one will ever have any issues with this gear.. and to be clear it's on the cam to oil pump drive where the issues occur. There is virtually no load on the distributor which is also driven off of the same gear on the cam.
The way I understand it the loads on this gear with high pressure, high volume, or high RPM, or combinations of those an cause it to wear/ shear and fail.
I had this happen to me on a drag race engine a few years ago.
3/20/23:
The IJ Crank Scraper arrived. It took a while. Ordered in January.
Did a little placing and mockup for now.
Now off to pull the old engine and transfer the head / externals and tins.
I put an IJ crank scraper on an autox TR6 engine along with their oil sump baffles. They did a good job of keepIng oil in the sump. I always wanted to stick a camera in the block to see what was going on in there before and after.
In reply to JoeTR6 :
It sure would be interesting to see what is happening inside there.
Banks did something like that with a Clear Plastic Diff cover that they tested.. No cameras inside but a clear view of the oil and characteristics of the fluid under dynamic conditions.
3/27/23:
Engine is ready to Pull,
Got the Fluids Drained, Exhaust Dropped and the Transmission Pulled.
The Oil did not look terrible on the drain so that's good. It will be interesting to see what happened inside this one.
Taking bets on oil pump gear?
Something else goofy?
Spun Bearing?
Who Knows?
In this car the Drivers seat Needs to be removed along with the inner Driver sill plate to remove enough carpet to access the screw in cover that I made for transmission removal.
Hope this old engine is on the stand by the end of the week. We shall see!
You'll need to log in to post.
